AutoCodes – KIA – P1586 KIA

P1586 KIA Code - MT/AT Encoding Signal Malfunction

Quick Answer

Vehicles have many options in one type of Engine Control Module (ECM). Common causes include Faulty Engine Control Module (ECM), ECM harness is open or shorted, ECM circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1586 KIA indicates MT/AT Encoding Signal Malfunction.
Common causes: Common causes include Faulty Engine Control Module (ECM), ECM harness is open or shorted, ECM circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 12,953

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1586 KIA Description

Vehicles have many options in one type of Engine Control Module (ECM). So automatic recognition function is applied. The options that can be recognized are MT/AT, 2/4WD, DPF, etc). When a ECM is installed to vehicle, these options recognition are performed by the ECM automatically as checking whether ground line is grounded or opened every IG KEY ON process.
If this recognition is not fulfilled well or any error occurs during the process, engine power generation is not sufficient and glow lamp on cluster blinks.
If a system is installed, the ECM connector is grounded.

OBDII Code P1586 KIA - MT/AT Encoding Signal Malfunction - AutoCodes.com — P1586 KIA Code - MT/AT Encoding Signal Malfunction

What does this mean?

What are the Possible Causes of the DTC P1586 KIA?

Faulty Engine Control Module (ECM)
ECM harness is open or shorted
ECM circuit poor electrical connection

How to Fix the DTC P1586 KIA?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1586 KIA code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1586 KIA Code

1. What does the OBDII code P1586 mean on a KIA?

P1586 indicates a "MT/AT Encoding Signal Malfunction," which refers to an issue with the signal that identifies the vehicle's transmission type (manual or automatic).

2. What are the common symptoms of code P1586 in a KIA?

Symptoms may include the check engine light turning on, transmission shifting issues, reduced vehicle performance, or the inability to change gears properly.

3. What causes the P1586 code in a KIA?

Common causes include a faulty transmission control module (TCM), damaged wiring or connectors related to the encoding signal, or incorrect transmission programming.

4. Can a bad transmission cause the P1586 code in a KIA?

While a bad transmission itself is not a direct cause, related issues such as faulty sensors or wiring can trigger the code.

5. How is the P1586 code diagnosed in a KIA?

A mechanic will typically use a diagnostic scanner to read the code, inspect the wiring and connectors, and test the transmission control module for faults.

6. Can I drive my KIA with the P1586 code active?

Driving with this code may be possible but is not recommended, as it could lead to further transmission issues or unsafe driving conditions.

7. How do I fix the P1586 code on my KIA?

Repairs may involve replacing or repairing damaged wiring, reprogramming or resetting the transmission control module, or replacing faulty components.

8. Is the P1586 code specific to a certain KIA model?

The code can appear in various KIA models equipped with OBDII systems but is related specifically to vehicles with transmission encoding issues.

9. How much does it cost to fix the P1586 code in a KIA?

The cost depends on the root cause, with wiring repairs costing less (around $100-$300) and TCM replacement or reprogramming costing more (up to $1,000 or more).

10. Can a software update fix the P1586 code in a KIA?

Yes, if the issue is caused by outdated or corrupted transmission control module software, a reprogramming or software update may resolve the problem.